Resilient wheel-rim.



J. EDMAN.

RBSILIENT WHEEL RIM. APPLICATION FILED Novxz, 190s.

1,948,054, l Patena B90224191@ "onrrnn sTnTns PATENT onirica..

JOHN; EDMAN, OF MINNEAPOLIS, MINNESOTA, A.ASSIGLVZOR TO ALFRED M. HOVLANI), 0F4

MINNEAPOLIS, -ivrrnnnsofra Specicationnf Letters Patent.

Application filed November 2, 1908. Serial No. 460,634.

To all. whom it may concern:

Be itknown thatl, JOHN EDMAN, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State ot' Minnesota, have invented certain new and useful Improvements in Resilient lVheel- Rims; and l do hereby declare the following to be a lt'ull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to resilient wheel rims, and has 'for its object to provide improved means for preventing the puncturing of pneumatic tires, while at the same time,

` preserving the resilience of the wheel rims due to the use of pneumatic tires therein.

To the above ends, the invention consists of the novel devices and combinations ot' devices hereinafter described and delined in vthe claim'.

This invention is in the nature ot an improvement on the resilient tire set forth and claimed by me in my prior application S. N. 417,008, filed February 21st, 1908.

ln the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings: Figure l is a fragmentary view in side elevation, showing Aa wheel equipped with a resilient tire, emi bodying my invention; Fig. 2 is a transverse lseetion taken on the line m2 m2 otl Fig. l.;

Fin'. 3 a plan View, showing a portion of th:` outer or tread band or tire of the run;

i Figi'. Je is a section taken on the line :c4 fr of detail View in plan, showing a portion ot' the inner pneumatic tube of the wheel rim; and Fig. 6 is a section taken on the line ce of Fig. 5.

The numeral l indicates the hub and the numeral 9 the spokes of the wheel.

The wheel rim proper is made up of annular metallic plates 3 and 4, that, are revcrsely 'hulged outward in cross section to form an endless channel 5, adapted to receive with clearance, a` pneumatic tube or tire 0. The inner liangj'es of the rim sections 3 and-44 are provided with seats that receive the outer ends oi? the spokes. and the said spokes are preferably permanently secured to the said rim section i'floy means ot screws or rivets 7. The rim section 4 is deiaclmbly connected to the rim section 3, preferably by headed screws or studs 8, that are secured to thc inner ange of the rim section 3 and are projected loosely through. perforations 9 in the inner flange of the rim section fl. The said perfor-ations 9 are of such size that they permit the heads ot the studs 8 to freely pass therethrough. lock ringr l0 is seated against the outer tiangeof the rim section 4, and is provided with lock notches 1l having enlarged ends7 through which the heads or" the studs 8 are adapted to he freely passed. Then the ring' is turned so that the slots' 11 engage under the heads of the studs 8, the two sections 3 and 4 are locked together as shown in the drawinggbut when said lock ring,f is turned so that the enlarged ends of the slots 11 are alined with the heads of the studs 8, the said lock ring'. may be moved laterally from Working position, thereby releasing` the rim section 4 so that it may also be moved laterallyv oli from the studs 8 and Jfrom working position.

The outer flanges or portions of the ri`r'n sections 3 andft are parallel so that they are adapted to receive an endless tread rim or band l2, that is preferably formed from a single continuous piece of solid rubber. This tread tire 1Q is approximately rectangular in cross section, and at its inner edge, it is Patented Dec. 24, 1912.

provided with outwardly projecting stop "Formed at their outer sides, with project-ing lugs 14 entering notches 15 formed in both ot' the rim members 3 and 4 at their inner tacos immediately adjacent the grooves for the tianges l?? Then the tire 6 is inflated, the Jugs 1.4: will be tightly pressed into the notches l5 and the outer rim or tire l2 will be held against creeping movement, in rel spcet to the rim sections 3 and 4. y

To prevent creeping of the pneumatic tire G within the rim sections 3 and 4, it is providedwvith anchoring ribs 1 6, that preferably run about one-half Way around the tire and are located at the inner portion thereof. A

These ribs 16 engage segment-al transversely eXtendedprooves 17 formed in the bottom ofthe channel 5, that is, in the rim sections 3 and 4. j

The rim sections 3 and f1, should, of course, be made as light as consistent with proper strength, and hence,they are reinforced by radial ribs 18. Preferably also, the grooves fin 17 are alined with the ribs i8 so that the of said m provce. Wfh f1 former constitute cavities or grooves Within the latter.

The pneumatic ti xe, is, as is aviden, proected. in such manner that it cannot possbly be punctlred. -t the same, time, iis resilience is added to that of the ouer or trend tire l2, so that a Wheel rim of the proper resience7 and :1t the same iime., of he proper Streugil is afforded.

'Yhnt I claim is:

n :1y resilient Wheel, :1 Whe-el rim forming a channel-like tire seat having ouwardj' extending nges, a Connuous zmnuar trom?. tire located between the rim Hanges, n pnenf matic inner tir@ or cushion in he 'Fire sont p unity of ransvelse segmental anchm S in it inner Surinam, each rib extending uppfr imaey hzf Way around the tireT anchormg grooves of Corresponding* shape ommfl in h@ tiro sont to receive the Suid Segmongn nmhor'ng ribs: on. the inner im?, ard mn 'forcing' ribs 'formed on Hw rim in nlnen'loni with the groom in fh@ fir@ seni, Sublimiinly as (lescrbo.

fn csiimouy whereof J'; my S'guniuo in pvoavnao of mvo WiLm-cses.

JOHN 'ED LA?, 

